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An increase in thermogenic capacity during the hibernation season is necessary to sustain arousal. The increase in HPT axis activity during fall contributes to higher thermogenic capacity. A functional HPT-axis during hibernation may thus contribute to thermogenesis in arousal.
5 lut 2024 · In hibernation, torpor states characterized by hypometabolism and hypothermia are interrupted with bouts of arousals characterized by temporary increases in metabolism, which act to increase...
28 kwi 2015 · Torpor. A temporary and controlled reduction in metabolic rate (MR) and body temperature (T b) followed by a return to euthermy using an endogenous source of heat. Torpor is often employed as an adaptive response to conserve energy during periods of resource scarcity.
Eventually, warming temperatures could mean individuals forgo hibernation completely; several bat species in coastal Mediterranean wetlands arouse from hibernation to forage when temperatures are >11°C, which is expected to be the average winter temperature in 60–80 years (Mas et al. 2022).
8 lip 2019 · When ambient temperature falls below 0°C, central nervous system (CNS) signals activate thermogenic mechanisms and body temperature remains regulated near ~1°C (Richter et al., 2015). During entrance, torpor, and arousal, significant changes in neuronal activity occur.
This includes the cellular and molecular strategies used to combat low environmental and body temperatures and lack of food and water. We discuss metabolic, neuronal, and hormonal cues that regulate hibernation and how they are thought to be coordinated by internal clocks.
11 cze 2020 · When housed at 22 C (72 F), fasting mice exhibited a sharp drop in core body temperature and significant reduction in metabolic rate and movement. In comparison, well-fed mice retained normal body temperatures.
